JPS601100U

JPS601100U - Monaural signal-pseudo stereo signal conversion circuit

Info

Publication number: JPS601100U
Application number: JP7238484U
Authority: JP
Inventors: 原本　豊
Original assignee: 日本ビクター株式会社
Priority date: 1984-05-17
Filing date: 1984-05-17
Publication date: 1985-01-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のステレオ信号−擬似ステレオ信号変換回
路の一例の回路図、第２図は従来回路及び本考案回路に
おける音源から聴取者までの音の伝達状態及びステレオ
効果の広がり領域を説明するための図、第３図は本考案
になるモノラル信号−擬似ステレオ信号変換回路の一実
施例の回路図である。１・・・モノラル信号入力端子、３・・・遅延回路、４
・・・レベル調整器、２ａ、　２ｂ、　１−１ａ、　１
　ｌｂ、　。１４ａ、１４ｂ・・・加算増幅器、６・・・モノラル信
号−擬似ステレオ信号変換回路（第１の信号変換回路）
、７・・・定位情報付加回路（第２の信号変換回路）、
８・・・再生スピーカ打消し回路、９・・・高域フィル
タ、１０ａ、　　１０ｂ、　　１３ａ、　　１３ｂ・・
・伝達特性回路、１６ａ、１６ｂ・・・擬似ステレオ信
号出力端子、ＬＳＰ、　Ｒ，、・・・実在スピーカ、Ｌ
ｉ、　Ｒｉ・・・仮想スピーカ、Ｍ・・・聴取者。Fig. 1 is a circuit diagram of an example of a conventional stereo signal-pseudo stereo signal conversion circuit, and Fig. 2 explains the state of sound transmission from the sound source to the listener and the spread area of the stereo effect in the conventional circuit and the circuit of the present invention. FIG. 3 is a circuit diagram of an embodiment of a monaural signal-pseudo stereo signal conversion circuit according to the present invention. 1...Monaural signal input terminal, 3...Delay circuit, 4
...Level adjuster, 2a, 2b, 1-1a, 1
lb. 14a, 14b...Summing amplifier, 6...Monaural signal-pseudo stereo signal conversion circuit (first signal conversion circuit)
, 7... localization information addition circuit (second signal conversion circuit),
8... Reproduction speaker cancellation circuit, 9... High-pass filter, 10a, 10b, 13a, 13b...
・Transfer characteristic circuit, 16a, 16b...pseudo stereo signal output terminal, LSP, R,...actual speaker, L
i, Ri...virtual speaker, M...listener.

Claims

[Scope of utility model registration request]

An input monaural signal that does not have localization information is branched into two systems, and one signal is added to the other signal in positive phase and negative phase through a delay circuit, high-pass filter, and level adjuster, respectively, to create a positive phase signal. A first signal conversion circuit that obtains a signal and an anti-phase signal, and a first signal conversion circuit that converts the normal-phase signal and the anti-phase signal between a virtual sound source outside the arrangement spread range of two real speakers and a listener. a second signal conversion circuit that converts using a transfer function; and a second signal conversion circuit that cancels crosstalk components from the two real speakers and converts the sound by the positive phase signal and the inverse signal to the two real speakers, respectively. A monaural signal comprising a reproduction speaker cancellation circuit positioned outside the distribution range of the monaural signal.
Pseudo stereo signal conversion circuit.